Cutting and stapling device



p 1944- J. T. COOPER 2,358,306

' CUTTING AND STAPLING DEVICE Filed Jan. 4, 1943 3 Sheets-Sheet l q IINVENTOR. .Joar y 7600, 0? 5min Mu ATTORNF Y.

p 1944- l J. T. COOPER 2,358,306

CUTTING AND STAPLING DEVICE Filed Jan. 4, 1943 3 Sheets-Sheet 2 INVENTOR. JOSEPH 776 0/ 257? ATTORNEY Patented Sept. 19, 1944 UNITED STATES PATENT OFFICE 2,358,206 I CUTTING AND s'rAPLIN DEVICE Joseph T. Cooper, Alhambra, Calif.

Application January 4, 1943, Serial No. 471,263

4 Claims.

My invention relates to a cutting and stapling device and more particularly to such a device that operates automatically after being initially actuated by manual means.

An object of the present invention is to provide automatic means for severing corrugated nails from corrugated strip material and then driving such corrugated nails into materials.

Another object of the invention is to provide mechanism for automatically severing and driving corrugated nails by pneumatic pressure. Still another object of the invention is to provide means for severing a corrugated nail from a strip of corrugated material and to provide means for preventing further feeding of the corrugated material until the severed portion has been driven from the machine.

Further objects are to provide such a device that can be operated in a vertical as well as a horizontal position and to provide such means that may be operated pneumatically, electrically or hydraulically.

' My invention also has for its objects to provide such a device that is positive in operation, convenient in use, manually movableto and from a working position, economical of manufacture, relatively simple and of general superiority and serviceability.

The invention also comprises novel details of construction and novel combinations and arrangements of parts, which will more fully appear in the course of the following description. However, the drawings inerely show and the following description merely describes two embodiments of the present invention, which are given by way of illustration or example only.

In the drawings, like reference characters designate similar parts. in the several views.

Fig. 1 is a plan view of an embodiment of my invention.

Fig. 2 Ban elevation, partly in section, of said embodiment.

Fig. 3 isan enlarged section taken on line 33 of Fig. 2.

Fig. 4 is an enlarged section taken on line 4-4 of Fig. 2.

Fig; 5 is an enlarged section taken on line 55 of Fig. 2.

Fig. 6 is an enlarged section taken on line 66 of Fig. 2.

Fig. 7 is a broken section taken on line I I of Fig. 4.

Fig. 8 is a somewhat enlarged bottom view of the present invention taken on lineB-B of Fig. 2.

Fig. 9 is a view similar to Fig. 8, but showing parts therein in different operative positions.

Fig. 10 is an elevation, partly in section, of a modified construction.

Referring more in detail to the drawings, the reference number It] generally designates an elongated housing that is slotted, as shown at I2, for feeding corrugated strip material I3 to the device.

A follower member I4 slides longitudinally in the slot I2 and is urged forward by a springurged strap I5 that is Woundunder spring tension in a casing I6. The outer end of the strap I5 is hooked over a pin I! on a 111g I8 that is upstanding on the follower member I4. A bottom plate I9 closes the bottom portion of the slot I2. -Screws 20 maintain the bottom plate I9 in position.

A bowed handle 2| is mounted between the housing I0, and an upright cylinderZZ is disposed'upon the housing. A knob 23 arranged on top of the cylinder 22 provides manual means to aid in handling the present tool.

An inlet opening 24 is tapped to receive a pressure supply conduit (not shown). An inlet passage 25 connects with the opening 2 and in turn connects with the interior of the cylinder 22 through the head 26 thereof. also has a transverse passage 2'! that connects with the atmosphereat opposite sides of the head. A downward passage 28 connects the transverse passage 21 with theinterior of the valve 29 is arranged in the bore I8. The greatest diameter of the valve 29 closes the passages 25, 21 and 28. However, the valve 29 has reduced portions 30 and 3|, which when opposite these passages respectively, do not close same.

An extension spring 32 is i-nclosed in a hollow boss 33 projecting laterally from the head 26. A pin 34 anchors one end of the spring 32. The other end of said spring is pinned to valve 29. The spring 32 tends to maintain the valve 29 in the position shown in Fig. 2'. A solenoid 35 in a housing 36 is aligned with the valve 29, whereby such valve constitutes the core of the solenoid Energization of the solenoid 35 draws the valve to the right in Fig. 2. against the action of the spring 32. 'When the solenoid is turned off, the spring 32 returns the valve 29 to the position shownin Fig. 2. A button 31 on the handle 2I circuit of the solenoid 35.-

The head 26 path of the plunger 4|.

A piston 38 has a cup leather 39 mounted thereon to provide a substantially fluid tight contact with the inner wall of the cylinder 22. A coil spring 40 tends to hold the piston 38 in the upper position shown in Fig. 2. The piston 38 is arranged upon a cylindrical plunger 4|, which operates in a cylindrical opening 42, axially aligned with and below the interior of the cylinder '22.

Mounted on the side of the plunger 4| is a driving rod 43 that is beveled on its lower face, as shown at 44. Arranged in the downward path of the driving rod 43 is a bevel faced end 14 of an L-shaped arm 45. A coil spring 46 tends to maintain the bevel faced end I4 in the path of the driving rod 43. A screw plug 41 closes the opening through which the coil spring 46 is placed in position. An offset link48 is pivoted at 49 and pivotally connected to the arm at 5!]. push a shearing block 52 transversely of the body 53. The shearing block 52 has a shoulder 54. A coil spring is disposed between the shoulder 54 and a fixed portion of the body 53. The spring 55 tends to resist shearing action of the block 52 and to return such block to its pre-shearing position, as shown in Fig. 8. The position of the block 52 following shearing is shown in Fig. 9. The shearing edge of the block 52 is beveled, as shown at 56 in Fig. 6, to facili- The link 48 has a nose 5| arranged to intermediate member 90.

on the plunger 4|. A plate 81 is mounted upon the core 84 and provides an abutment against which a coil spring 88 engages. The other end of the spring 88 abuts against the relatively stationary solenoid 83. A spring-urged switch lever 9| is also connected in the circuit of the solenoid 83. The switch lever 9| is arranged between shoulders 92 and 93 in a groove 94 in the The shoulder 92 engagesthe lever 9| on the downward movement of the member 98, thereby moving the lever 9| to a circuit-opening position. Upon return movement of the member 90, under the influence of the spring 83, a spring 89 moves the lever 9| to a circuit-closing poistition. The lever 9| and the shoulder 92 are arranged to break the circuit of the solenoid 83 just prior to the time the plunger 85 reaches the point in the solenoid is moved out of alignment with the slot 60, as

shown in Fig. 9, whereby said new end of the strip |3 abuts against a face 8| in the body 53,

leaving the sheared corrugated nail 92 in the Thus the corrugated strip l3 cannot feed into the slot 68 while the block 52 is in effective position, and it will be noted that the plunger-operated connectionsactuating said block are such that the block is maintained in effective position during the nail driving operation following severance of a nail. After the nail 82 has been driven out of the bore 42 by the plunger 4|, and the link 48 returned to its original position. following release of the control button 31 and return of the plunger 4|, the block 52 is pushed back to the position shown in Fig. 8, and the arm 51 moves the strip |3 again into alignment with the slot 60. The plunger 4| has a projecting driving face 63 arranged parallel with the severed nail 62, whereby to drive the nail through slot 64 in the base plate and into the desired material.

The modification shown in Fig. 10 comprises a body member 88 having a head 8| upon which is mounted the knob 23. The handle 2| contains wiring 82. The button 31 manually operates a switch in the circuit containing the wiring 82.

' A solenoid coil 83 in this form is arranged same manner that the driving rod 43, is arranged-7 where the plunger is static. Thereby, the

momentum of the plunger produces the driving action and not directly the energy in the solenoid.

In the operation of my device, a strip of corrugated material is fed into the slot i2 and arranged with a spring-urged follower |4 behind same. The spring-urged strap |5 maintains pressure behind the corrugated strip l3. By

means of the knob 23 and handle 2| the tool is disposed with the slot 64 opposite the point into which it is desired to drive a corrugated nail. Thereupon the button 31 is pressed closing the circuit of the solenoid 35, which draws valve 29 into a position in which the reduced portion 3| of the valve is opposite the inlet 24. The pressure fluid thereupon flows through the passage 25 into the cylinder 22 above the cup leather therein.

Fluid pressure above the cup leather 39 causes the plunger 4| and the driving rod 43 to be driven downward, against the action of the spring 40. Before the plunger face 63 engages the corrugated material l3, the beveled face 44 of the driving rod 43 engages the correspondingly beveled face 14 of the L-shaped arm 45, thereby moving the link 48 inward within its recess 85, thus causing shearing by the block 52 of the end of the strip l3, to provide the severed, corrugated nail 82, as shown in Fig. 9.

Continued downward movement of the plunger 4| causes its driving face 63 to engage the top of the severed nail 62 and to drive the nail through the slot 64 and into the material, as desired. 1

Release of the button 31 breaks the circuit of the solenoid 35, whereby the spring 32 pulls the valve 29 to its exhausting position, shown in Fig. 2. In its exhausting position, the reduced portion 38 of the valve is aligned with the transverse passage 21 and the passage 28, whereby fluid pressure above the cup leather 29 will exhaust through the passage 28, past thereduced portion 39 of the valve, and through passage 21 to the atmosphere. When the valve 29 is in this exhausting position, it .shuts 011 further supply of pressure fluid by reason of the larger diameter of the valve being in a closing position with respect to the passage 25.

When the fluid pressure is thus exhausted, the spring 40 returns the piston 38 to its original position; the spring 46 returns the arm'45 and the link 48 to their original positions; the spring 55 returns the shearing block 52 to its original positiomand the spring 59 returns the arm 51 to its original position. The tool is now'r'eady forthe next cycle :of operation. I

:In' the operation of the modification shown in Fig. 10, the circuit of the solenoid 83 is closed by pressing the button 31. Energization of the solenoid 83 causes it to attract its core member 84, which moves such member downward in Fig. 10, against the action of the spring 88. The switch lever 9| breaks the circuit of the solenoid just prior to the driving action of the plunger 85, permitting the latters momentum to do the driving of the sheared nail 62.

The spring 88 returns the core and plunger to their original position. On their upward travel, the spring-urged lever 9| moves to a circuit-closing position. As long as the button 31 is depressed, the plunger and core continue to make downward and upward movements. When the button 31 is released, the core and plunger assume their uppermost positions.

While I have illustrated and described What I now regard as the preferred embodiments of my invention, the constructions are, of course, subject to modifications without departing from the spirit and scope of my invention. I, therefore, do not wish to restrict myself to the particular forms of construction illustrated and described, but desire to avail myself of all modifications that may fall within the scope of the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A machine for severing and driving corrugated nails, comprising a nail driving plunger, spring means for feeding corrugated strip material in the machine toward said plunger, means having an effective movement to sever a nail from said strip in advance of the plunger and at the same time deflect the adjacent portion of the strip out of feeding line, means actuated by the plunger prior to its engagement with the severed nail for shifting the severing means to effective position and maintaining the same in said position during completion of the nail driving operation, means for subsequently returning the plunger and severing means to inactive position, and means for shifting the uncut strip to feeding position after return ofthe severing means.

2. A machine for severing and driving cormgated nails, comprising a nail driving plunger, spring means for feeding corrugated strip material in the machine toward said plunger, a body member having a bore for the plunger and a feed slot opening into said bore to receive an end of the strip material, means for severing a nail within the bore and having an elfective movement adjacent to said feed slot to simultaneously deflect the adjacent end of the strip material out of line with the feed slot, means actuated by the plunger prior to its engagement with the severed nail for actuating the severing means and thereafter maintaining the same in I her being arranged to permit the block to shear off material fed into the path of the plungerv strip deflecting position during the completion of the nail driving operation, manually controlled means for actuating the plunger, spring means to return the plunger and'severing means following operation thereof, and spring-actuated means for returning the strip material into line with the feed slot after return of the severing means.

3. A machine for severing and driving corrugated nails, comprising shearing means including a movable shearing block, a yielding member opposed to the shearing block and arranged to receive corrugated strip material between the block and said member, the yielding member being arranged to permit the block to shear off a nail and move to an effective position for shifting at least a portion of the remaining strip material aside, whereby the material abuts against a relatively stationary part of the machine, to limit further feeding of the strip material, plunger means arranged to drive the severed nails from the machine, and means activated by the plunger and connected to operatively move and maintain the block in said effective position to hold the material in such abutting position during the nail-driving operation of the plunger means, the yielding member returning the material to a position to be fed to its next shearing position, upon return of the plunger and shearing block.

4. A machine for severing and driving corrugated nails, comprising plunger means arranged to drive the severed nails from the machine, spring-urged means for feeding corrugated strip material into the path of the plunger means and continuously exerting afeeding tension on said material; shearing means including a movable shearing block, a yielding member opposed to the shearing block and arranged to receive between the block and said member strip material fed by the spring-urged means, the yielding memmeans and to permit the block to move at least a portion of the remaining strip material aside, whereby the material temporarily cannot be fed into the path of the plunger means, means activated by the plunger means for effective movement of the shearing block and connected to maintain the block in its feed-restraining position during the nail-driving operation of the plunger means, the yielding member returning the material to a position to be fed to its next shearing position, upon return of the plunger and shearing block.

JOSEPH T. COOPER. 

